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Electrical Engineering

Issue 5 • Date May 1942

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Displaying Results 1 - 25 of 29
  • [Front cover]

    Publication Year: 1942, Page(s): c1
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  • [Advertisement - Front inside cover]

    Publication Year: 1942, Page(s): c2
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  • [Advertisements]

    Publication Year: 1942, Page(s):1 - 20
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  • Contents

    Publication Year: 1942, Page(s): 1
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  • Highlights

    Publication Year: 1942, Page(s): 230
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  • Effect of air raids on British power systems

    Publication Year: 1942, Page(s):231 - 241
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4947 KB)

    THIS account is based upon experience gained during the Battle of Britain and in 1941, and is offered to members of the AIEE in an effort to help them, should they become responsible for restoring electricity supplies after air raids. It is realized that conditions in America and in Great Britain are not identical, but it is believed that they are so similar that American engineers will be well ab... View full abstract»

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  • Railroad electrification in Brazil

    Publication Year: 1942, Page(s): 241
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (256 KB)

    Electrification of 207 track-miles of the meter-gauge Sorocabanca Railroad, owned by the state of Sao Paulo, Brazil, is now in progress, with equipment purchased in the United States. Work on the $10,000,000 project, which is being handled by a Brazilian construction firm, is expected to be completed in about three years. View full abstract»

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  • The second mile

    Publication Year: 1942, Page(s):242 - 247
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1406 KB)

    “WHOSOEVER shall compel thee to go one mile — go with him twain.” You will recognize this text from the Sermon on the Mount as a counsel of perfection, good advice in paradoxical form which emphasizes a profound truth by an apparent denial of common sense. A preacher who was once reproached for straying rather far from his text replied: “A text is like a gate; it has tw... View full abstract»

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  • Analysis of systems with known transmission-frequency characteristics by Fourier integrals

    Publication Year: 1942, Page(s):248 - 256
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1459 KB)

    LINEAR SYSTEMS in the general transient state may be analyzed effectively by means of the operational calculus, the Laplace transforms, or the Fourier transforms. Preceding articles in this series have introduced the operational calculus,1 the Laplace transforms,3 and certain essential mathematical ideas and processes pertaining to the manipulation of functions of a complex v... View full abstract»

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  • Institute activities: 1942 Summer convention planned for work

    Publication Year: 1942, Page(s):257 - 263
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  • Obituary

    Publication Year: 1942, Page(s):263 - 264
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  • Membership

    Publication Year: 1942, Page(s):264 - 265
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  • Of current interest: Extensive postwar planning outlined by National resources planning board

    Publication Year: 1942, Page(s):266 - 274
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  • Letters to the editor

    Publication Year: 1942, Page(s):274 - 278
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  • New books

    Publication Year: 1942, Page(s): 278
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  • Transactions section: Preprint of corresponding pages from the current annual AIEE transactions volume: Correction for saturation

    Publication Year: 1942, Page(s):232 - 234
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (512 KB)

    IT is generally agreed that the virtual or air-gap voltage of a salient-pole synchronous machine determines the saturation in the magnetic circuit. Studies have indicated that the major portion of the saturation occurs in the poles of such machines. Consequently, it is logical to apply a correction as a linear addition to the nominal or excitation voltage vector of the two-reaction diagram drawn w... View full abstract»

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  • A 2,500,000-kva compressed-air powerhouse breaker

    Publication Year: 1942, Page(s):235 - 240
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5268 KB)

    THE use of compressed-air breakers for indoor service has become established by several field installations since the presentation of papers1,2 describing these devices two years ago. At that time complete tests had been made justifying ratings to 1,500,000 kva. Since then, powerhouse requirements have demanded the development of similar breakers for 2,500,000 kva. During the same inter... View full abstract»

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  • Linear couplers for bus protection

    Publication Year: 1942, Page(s):241 - 248
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3210 KB)

    THE linear coupler transformer is a constant mutual reactance connecting the primary circuit to the relay. It introduces a new principle into the protective relaying art, a principle that is fundamentally sound and that eliminates completely, at its source, the most troublesome problem that has been standing in the way of simple high-speed bus protection. That problem is saturat... View full abstract»

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  • Facilities for the supply of kilowatts and kilovars

    Publication Year: 1942, Page(s):249 - 254
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1407 KB)

    IN determining a system's capacity requirements for supplying the electric load — kilowatts and kilovars under all conditions of operation throughout the year — a comprehensive capacity and load study is necessary. This was particularly emphasized by two operating experiences on the system of the Public Service Electric and Gas Company. The first episode was a system voltage disturba... View full abstract»

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  • A study of the modified Kramer or asynchronous — Synchronous cascade variable-speed drive

    Publication Year: 1942, Page(s):255 - 260
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1333 KB)

    LARGE wind tunnels require a wide range of speed and accurate speed control and if their use factor is high, a high efficiency over the working range is desirable. Also minimum disturbance to the power system is important in many cases. To meet these requirements a speed-control system has been adopted which, while not new in principle, involved the solution of a number of interesting problems. Th... View full abstract»

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  • Loss-of-field protection for generators

    Publication Year: 1942, Page(s):261 - 265
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2341 KB)

    THOUGH electrical circuits from generator armature windings outward to utilization apparatus have received much attention from a protective viewpoint in the past 20 years, relatively little attention has been given to generator field-winding protection. Calculations show that loss of field in a large generator may cause serious voltage disturbance to the system. A need for some suitable protection... View full abstract»

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  • Field investigation of the characteristics of lightning currents discharged by arresters

    Publication Year: 1942, Page(s):266 - 271
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1662 KB)

    Data have been obtained during the past three years on the magnitude and wave shape of lightning currents discharged by arresters in service on several solidly grounded neutral circuits of the American Gas and Electric Company system. Correlated measurements have been obtained with the cathode-ray oscillograph, the fulchronograph, and the surge-front recorder. The maximum arrester-phase leg curren... View full abstract»

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  • The fundamentals of industrial distribution systems

    Publication Year: 1942, Page(s):272 - 279
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    THE intent of this paper is to present the comparative merits of the several typical forms of industrial plant electrical distribution systems presented with a view to the general adoption of that system which will, in the majority of cases, meet the overall requirements most effectively. View full abstract»

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  • Transient characteristics of current transformers during faults

    Publication Year: 1942, Page(s):280 - 285
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  • The doubly fed machine

    Publication Year: 1942, Page(s):286 - 289
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (818 KB)

    SYNCHRONOUS machines, operating with a-c excitation on both stator and rotor are used in many applications, for example, as induction frequency converters, as power and instrument Selsyn drives, and as variable speed power drives. Reference 1 has mentioned particularly the variable speed fan drive, and presented equations for the small oscillations of one such doubly fed machine. Reference 2 has a... View full abstract»

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Aims & Scope

This Periodical ceased publication in 1963. The current retitled publication is IEEE Spectrum.

Full Aims & Scope